c2html: src/c2html.c@d5af9261231d (annotated)

src/c2html.c@d5af9261231d (annotated)

src/c2html.c

Sun, 11 Jun 2023 15:21:44 +0200

author: Mike Becker <universe@uap-core.de>
date: Sun, 11 Jun 2023 15:21:44 +0200
changeset 71: d5af9261231d
parent 70: 60cecca5e484
permissions: -rw-r--r--

fix incorrect highlighting when input file starts with line break

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2016 Mike Becker. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *   1. Redistributions of source code must retain the above copyright
  *      notice, this list of conditions and the following disclaimer.
  *
  *   2. Redistributions in binary form must reproduce the above copyright
  *      notice, this list of conditions and the following disclaimer in the
  *      documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
  */
 #include "c2html.h"
 #include <cx/array_list.h>
 #include <cx/printf.h>
 #include <string.h>
 size_t c2html_format(
         CxList const *lines,
         void *outbuf,
         cx_write_func wfnc,
         c2html_highlighter_func highlighter,
         int showln
 ) {
     /* total written bytes */
     size_t written = 0;
     /* compute width of line numbering */
     int lnw = 0;
     if (showln) {
         size_t no_lines = cxListSize(lines);
         for (size_t p = 1; p < no_lines; p *= 10) lnw++;
     }
     /* start code formatting */
     written += wfnc("<div class=\"c2html-code\">\n", 1, 26, outbuf);
     /* process lines */
     int lineno = 0;
     c2html_highlighter_data hd;
     hd.multiline_comment = 0;
     cxBufferInit(&hd.primary_buffer, NULL, 256, NULL, CX_BUFFER_AUTO_EXTEND);
     cxBufferInit(&hd.secondary_buffer, NULL, 32, NULL, CX_BUFFER_AUTO_EXTEND);
     CxBuffer out_line;
     cxBufferInit(&out_line, NULL, 128, NULL, CX_BUFFER_AUTO_EXTEND);
     CxIterator in_lines = cxListIterator(lines);
     cx_foreach(char*, in_line, in_lines) {
         /* increase line number and clean line buffer */
         lineno++;
         cxBufferClear(&out_line);
         /* write line number */
         if (showln) {
             cx_bprintf(&out_line, "<a class=\"c2html-lineno\" name=\"l%d\" "
                                   "href=\"#l%d\">%*d </a>",
                        lineno, lineno, lnw, lineno);
         }
         /* process code line */
         highlighter(in_line, &out_line, &hd);
         /* write code line */
         written += wfnc(out_line.space, 1, out_line.size, outbuf);
     }
     /* end code formatting */
     written += wfnc("</div>\n", 1, 7, outbuf);
     /* cleanup and return */
     cxBufferDestroy(&hd.primary_buffer);
     cxBufferDestroy(&hd.secondary_buffer);
     cxBufferDestroy(&out_line);
     return written;
 }
 size_t c2html_textformat(
         char const *inputbuffer,
         void *outbuf,
         cx_write_func wfnc,
         c2html_highlighter_func highlighter,
         int showln
 ) {
     /* a rough estimate for the number of lines */
     size_t inputbuflen = strlen(inputbuffer);
     size_t est_cap = 16 + inputbuflen / 40;
     /* create the line pointer array */
     CxList *lines = cxArrayListCreateSimple(CX_STORE_POINTERS, est_cap);
     cxListAdd(lines, inputbuffer);
     for (size_t i = 0; i < inputbuflen; i++) {
         if (inputbuffer[i] == '\n' && i + 1 < inputbuflen) {
             cxListAdd(lines, inputbuffer + i + 1);
         }
     }
     /* invoke the other function */
     size_t n = c2html_format(lines, outbuf, wfnc, highlighter, showln);
     /* cleanup and return */
     cxListDestroy(lines);
     return n;
 }

Mercurial > hg > c2html / annotate

src/c2html.c@d5af9261231d (annotated)

src/c2html.c